I believe people are again far too unable to understand the viewpoint of the MC and people. Knowing what the other party wants to accomplish is something important and her spirits are a trumpcard. Fighting them with rumours, taking escorts with her and beeing cautious are all good things she is doing. Maybe just taking 1-2 guards with her is a bit few, that is something we need to admit. Maybe more knights could be possible, but she cant take too many people with her.
Currently we dont know how much battle potential her spirits have, which the other party shouldnt even know they exist (there is no way they could know about it without traitors within theyre trusted people, which would be more than a dumb plottwist). Because the clan who could use spirits is gone. The only truly reckless thing she is doing is using her spirits to purify the land.